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Functional Description
ATCA-F125 (6873M Artwork) Installation and Use (6806800J94K)
79
4.7.2
ShMC Cross-Connect
Two 100 Base-Tx ports of the base channel switch are connected to the split Base Interface
ShMC port (BC1) connector at the backplane. This connection is compliant to the "cross-
connect" ECN 3.0-2.0-001 to PICMG3.0 R3.0 as shown in the following figure.
4.8
Fabric Channel Interface
The Broadcom BCM56820 switch device provides 24 10Gbps XAUI ports and four 1Gbps SGMII
ports. Fourteen of the 10Gbps ports are routed to the backplane for the switch fabric. Two of
these 14 port may be routed to the RTM under control of high speed muxes. One XAUI port is
provided to connect the switch to the secondary hub board. Six 10-Gbps uplink interfaces from
the switch are routed to the Zone 3 connectors for use by an RTM. Two other XAUI uplink ports
are routed to the BCM8747 XAUI-SFI PHY to provide two SFP+ uplinks on the front panel. One
XAUI port is connected to a mux which can route the XAUI interface to AMC ports 8-11. The
four 1 Gbps SGMII ports of the BCM56820 can be routed to different destinations across the
board using a series of 2 channel 2:1 muxes. The select pins for these mux/demux switches are
controlled by the FGPA.
Figure 4-6
Standard ShMC Cross-Connect
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